{"id":95,"date":"2026-09-01T01:24:25","date_gmt":"2026-08-31T17:24:25","guid":{"rendered":"https:\/\/www.ziliaochi.cn\/index.php\/2026\/09\/01\/interview-mobile-startup-memory\/"},"modified":"2026-09-02T00:41:09","modified_gmt":"2026-09-01T16:41:09","slug":"interview-mobile-startup-memory","status":"publish","type":"post","link":"https:\/\/www.ziliaochi.cn\/index.php\/2026\/09\/01\/interview-mobile-startup-memory\/","title":{"rendered":"\u79fb\u52a8\u7aef\u9762\u8bd5\u9ad8\u9891\uff1a\u542f\u52a8\u6d41\u7a0b\u3001\u5185\u5b58\u7ba1\u7406\u4e0e ANR\/OOM \u6392\u67e5"},"content":{"rendered":"
\n
\u5173\u952e\u8bcd<\/span>\u51b7\u542f\u52a8\u3001Zygote\u3001\u5185\u5b58\u6cc4\u6f0f\u3001ANR\u3001OOM\u3001\u5361\u987f\u6392\u67e5\u3001\u79fb\u52a8\u7aef\u9762\u8bd5<\/div>\n
\n
\u76ee\u5f55<\/div>\n
    \n
  1. \u4e00\u3001\u542f\u52a8\u6d41\u7a0b\uff1a\u4e24\u5f20\u6d41\u7a0b\u56fe<\/a><\/li>\n
  2. \u4e8c\u3001\u5185\u5b58\u7ba1\u7406\uff1a\u5fc5\u8003\u7684\u6838\u5fc3\u673a\u5236<\/a><\/li>\n
  3. \u4e09\u3001ANR \u4e0e OOM\uff1a\u7ebf\u4e0a\u95ee\u9898\u6392\u67e5<\/a><\/li>\n
  4. \u56db\u3001\u5361\u987f\u6392\u67e5\u7684\u901a\u7528\u65b9\u6cd5\u8bba<\/a><\/li>\n
  5. \u4e94\u3001\u5c0f\u7ed3<\/a><\/li>\n<\/ol>\n<\/div>\n

    \u79fb\u52a8\u7aef\u9762\u8bd5\u6709\u4e24\u7c7b\u95ee\u9898\u6700\u80fd\u533a\u5206\u6c34\u5e73\uff1a\u4e00\u7c7b\u662f\u80fd\u4e0d\u80fd\u8bb2\u6e05\u7cfb\u7edf\u542f\u52a8\u7684\u5b8c\u6574\u94fe\u8def<\/strong>\uff08\u8bf4\u660e\u4f60\u7406\u89e3\u5e73\u53f0\uff09\uff0c\u53e6\u4e00\u7c7b\u662f\u9047\u5230\u7ebf\u4e0a\u5d29\u6e83\/\u5361\u6b7b\u80fd\u5426\u7ed9\u51fa\u6392\u67e5\u8def\u5f84<\/strong>\uff08\u8bf4\u660e\u4f60\u771f\u7684\u505a\u8fc7\u9879\u76ee\uff09\u3002<\/p>\n

    \u672c\u6587\u628a\u8fd9\u4e24\u5757\u7684\u9ad8\u9891\u771f\u9898\u6574\u7406\u6210\u53ef\u80cc\u8bf5\u3001\u53ef\u5ef6\u4f38\u7684\u7b54\u9898\u6846\u67b6\u3002<\/p>\n

    \u4e00\u3001\u542f\u52a8\u6d41\u7a0b\uff1a\u4e24\u5f20\u6d41\u7a0b\u56fe<\/h2>\n
    \"Android
    Android \u51b7\u542f\u52a8\u94fe\u8def\uff1aAMS \u2192 Zygote fork \u2192 Application \u2192 Activity \u2192 \u9996\u5e27\u4e0a\u5c4f<\/figcaption><\/figure>\n

    Android \u542f\u52a8\u94fe\u8def<\/h3>\n
      \n
    1. \u70b9\u51fb\u56fe\u6807<\/strong> \u2192 Launcher \u901a\u8fc7 Binder \u901a\u77e5 ActivityManagerService<\/code>\uff08AMS\uff09\uff1b<\/li>\n
    2. AMS \u68c0\u67e5\u76ee\u6807\u8fdb\u7a0b\u662f\u5426\u5b58\u5728\uff0c\u4e0d\u5b58\u5728\u5219\u901a\u8fc7 Zygote<\/strong> fork \u51fa\u65b0\u8fdb\u7a0b\uff08Zygote \u9884\u52a0\u8f7d\u4e86\u6846\u67b6\u7c7b\u4e0e\u8d44\u6e90\uff0c\u8fd9\u662f fork \u5feb\u7684\u539f\u56e0\uff09\uff1b<\/li>\n
    3. \u65b0\u8fdb\u7a0b\u521b\u5efa ActivityThread<\/code>\uff0c\u6267\u884c main()<\/code>\uff0c\u521d\u59cb\u5316 Looper<\/code> \u4e0e\u4e3b\u7ebf\u7a0b\u6d88\u606f\u5faa\u73af\uff1b<\/li>\n
    4. AMS \u901a\u77e5\u8fdb\u7a0b\u521b\u5efa Application<\/code>\uff0c\u56de\u8c03 onCreate()<\/code>\uff1b<\/li>\n
    5. \u542f\u52a8\u9996\u5c4f Activity<\/code>\uff1a\u4f9d\u6b21\u56de\u8c03 onCreate \u2192 onStart \u2192 onResume<\/code>\uff1b<\/li>\n
    6. View \u6811\u5b8c\u6210\u6d4b\u91cf\u3001\u5e03\u5c40\u3001\u7ed8\u5236\u540e\uff0c\u9996\u5e27\u4e0a\u5c4f<\/strong>\uff0c\u51b7\u542f\u52a8\u7ed3\u675f\u3002<\/li>\n<\/ol>\n
      \n

      \u8ffd\u95ee\uff1a<\/strong>“\u4e3a\u4ec0\u4e48\u8981\u6709 Zygote\uff1f”
      \n\u56e0\u4e3a fork \u65f6\u5b50\u8fdb\u7a0b\u7ee7\u627f\u7236\u8fdb\u7a0b\u7684\u5185\u5b58<\/strong>\u3002Zygote \u9884\u52a0\u8f7d\u4e86\u7cfb\u7edf\u6846\u67b6\u7c7b\u4e0e\u5e38\u7528\u8d44\u6e90\uff0cfork \u51fa\u7684\u5e94\u7528\u8fdb\u7a0b\u76f4\u63a5\u5171\u4eab\u8fd9\u4e9b\u5185\u5bb9\uff08\u5199\u65f6\u590d\u5236\uff09\uff0c\u7701\u53bb\u91cd\u590d\u52a0\u8f7d\u7684\u65f6\u95f4\u4e0e\u5185\u5b58\u3002\u8fd9\u662f Android \u542f\u52a8\u4f18\u5316\u7684\u57fa\u7840\u8bbe\u8ba1\u3002<\/p>\n<\/blockquote>\n

      iOS \u542f\u52a8\u94fe\u8def<\/h3>\n
        \n
      1. exec()<\/strong> \u52a0\u8f7d Mach-O \u53ef\u6267\u884c\u6587\u4ef6\uff1b<\/li>\n
      2. dyld<\/strong> \u52a0\u8f7d\u52a8\u6001\u5e93\uff08dylib\uff09\uff0c\u5b8c\u6210\u7b26\u53f7\u7ed1\u5b9a\u4e0e rebase\/bind\uff1b<\/li>\n
      3. \u8fd0\u884c Objective-C\/Swift \u8fd0\u884c\u65f6\u521d\u59cb\u5316\uff08\u6ce8\u518c\u7c7b\u3001\u5206\u7c7b\u3001+load\uff09\uff1b<\/li>\n
      4. \u8c03\u7528 main()<\/code> \u2192 UIApplicationMain<\/code>\uff0c\u5efa\u7acb\u4e3b RunLoop\uff1b<\/li>\n
      5. AppDelegate \u56de\u8c03\u7cfb\u5217\u65b9\u6cd5\uff0c\u6700\u7ec8\u6e32\u67d3\u9996\u5c4f\u3002<\/li>\n<\/ol>\n

        Q\uff1a\u51b7\u542f\u52a8\u3001\u6e29\u542f\u52a8\u3001\u70ed\u542f\u52a8\u7684\u533a\u522b\uff1f<\/strong>
        \n\u51b7\u542f\u52a8\u662f\u8fdb\u7a0b\u5b8c\u5168\u4e0d\u5b58\u5728<\/strong>\uff0c\u9700\u8981\u5b8c\u6574\u521b\u5efa\uff1b\u6e29\u542f\u52a8\u662f\u8fdb\u7a0b\u5b58\u5728\u4f46 Activity \u9700\u91cd\u5efa\uff1b\u70ed\u542f\u52a8\u662f\u5e94\u7528\u5df2\u5728\u540e\u53f0\uff0c\u76f4\u63a5\u5207\u56de\u524d\u53f0\u3002\u4f18\u5316\u76ee\u6807\u901a\u5e38\u6307\u51b7\u542f\u52a8<\/strong>\u3002<\/p>\n

        \u4e8c\u3001\u5185\u5b58\u7ba1\u7406\uff1a\u5fc5\u8003\u7684\u6838\u5fc3\u673a\u5236<\/h2>\n

        Q\uff1aAndroid \u4e0e iOS \u7684\u5185\u5b58\u7ba1\u7406\u673a\u5236\u6709\u4f55\u4e0d\u540c\uff1f<\/strong><\/p>\n

        \n\n\n\n\n\n\n\n\n
        \u7ef4\u5ea6<\/th>\nAndroid\uff08ART\uff09<\/th>\niOS<\/th>\n<\/tr>\n<\/thead>\n
        \u56de\u6536\u65b9\u5f0f<\/td>\nGC\uff08\u5783\u573e\u56de\u6536\uff09\uff0c\u5206\u4ee3 + \u5e76\u53d1\u6807\u8bb0<\/td>\nARC\uff08\u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff09<\/td>\n<\/tr>\n
        \u91ca\u653e\u65f6\u673a<\/td>\n\u7531 GC \u51b3\u5b9a\uff0c\u975e\u786e\u5b9a\u6027<\/td>\n\u5f15\u7528\u8ba1\u6570\u5f52\u96f6\u7acb\u5373\u91ca\u653e<\/td>\n<\/tr>\n
        \u5178\u578b\u6cc4\u6f0f<\/td>\n\u957f\u751f\u547d\u5468\u671f\u5bf9\u8c61\u6301\u6709 Activity\/Context<\/td>\n\u5faa\u73af\u5f15\u7528\uff08\u5c24\u5176\u95ed\u5305\u6355\u83b7 self\uff09<\/td>\n<\/tr>\n
        \u6392\u67e5\u5de5\u5177<\/td>\nAndroid Profiler\u3001LeakCanary\u3001MAT<\/td>\nInstruments\u3001Xcode Memory Graph<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

        Q\uff1aAndroid \u5185\u5b58\u6cc4\u6f0f\u6700\u5e38\u89c1\u7684\u539f\u56e0\uff1f<\/strong><\/p>\n